Saes Getters S.p.a.

Antonio Schiabel

Claudio Boffito

Allessandro Gallitognotta

Stefano Paolo Giorgi

Improved process for evacuating the thermally insulating jacket of a dewar having an inner wall and an outer wall, with the inner space between said walls completely or partially filled with an insulating material, containing also a moisture sorbing material and a getter material, in which said moisture sorbing material is a chemical drying agent.

Thermally insulating jacket and related process

A mercury-dispensing device is disclosed that includes a mercury dispenser having the formula Ti.sub.x Zr.sub.y Hg.sub.z in which x and y are between 0 and 13, inclusive, the quantity x+y is between 3 and 13, inclusive, and z is 1 or 2; and a promoter that comprises copper, silicon and possibly a third metal selected among the transition elements. A getter material selected among titanium, zirconium, tantalum, niobium, vanadium and mixtures thereof, and alloys of these metals with nickel, iron or aluminum can be included in the device. The mercury dispense, promoter and optional getter material are provided preferably in the form of powders compressed as a pellet, or contained in a ring-shaped metallic support or rolled on the surfaces of a metallic strip. Also disclosed is a process for introducing mercury into electron tubes by making use of the above-mentioned mercury-dispensing devices.

Mercury dispensing device

A mercury-dispensing device is disclosed that includes a mercury dispenser comprising an intermetallic compound including mercury and a second metal selected from the group consisting of titanium, zirconium, and mixtures thereof; and a promoter that comprises copper, tin and at least a third metal selected among the rare earth elements. A getter material selected among titanium, zirconium, tantalum, niobium, vanadium and mixtures thereof, and alloys of these metals with nickel, iron or aluminum can be included in the device. The mercury dispenser, promoter and optional getter material are provided preferably in the form of powders compressed as a pellet, or contained in a ring-shaped metallic support or rolled on the surfaces of a metallic strip. Also disclosed is a process for introducing mercury into electron tubes by making use of the above-mentioned mercury-dispensing devices.

Combination of materials for integrated getter and mercury-dispensing

A mercury dispensing device is disclosed that includes a mercury dispenser having the formula Ti.sub.x Zr.sub.y Hg.sub.z in which x and y are between 0 and 13, inclusive, the quantity x+y is between 3 and 13, inclusive, and z is 1 or 2; and a promoter that comprises copper, silicon and possibly a third metal selected among the transition elements. A getter material selected among titanium, zirconium, tantalum, niobium, vanadium and mixtures thereof, and alloys of these metals with nickel, iron or aluminum can be included in the device. The mercury dispenser, promoter and optional getter material are provided preferably in the form of powders compressed as a pellet, or contained in a ring-shaped metallic support or rolled on the surfaces of a metallic strip. Also disclosed is a process for introducing mercury into electron tubes by making use of the above-mentioned mercury-dispensing devices.

Mercury dispensing composition containing Cu-Si alloy promoter

A mercury-dispensing device is disclosed that includes a mercury dispenser having the formula Ti.sub.x Zr.sub.y Hg.sub.z in which x and y are between 0 and 13, inclusive, the quantity x+y is between 3 and 13, inclusive, and z is 1 or 2; and a promoter that comprises copper, silicon and possibly a third metal selected among the transition elements. A getter material selected among titanium, zirconium, tantalum, niobium, vanadium and mixtures thereof, and alloys of these metals with nickel, iron or aluminum can be included in the device. The mercury dispenser, promoter and optional getter material are provided preferably in the form of powders compressed as a pellet, or contained in a ring-shaped metallic support or rolled on the surfaces of a metallic strip. Also disclosed is a process for introducing mercury into electron tubes by making use of the above-mentioned mercury-dispensing devices.

A mercury-dispensing combination suitable to release an amount of mercury higher than 60% during the activation step, even after partial oxidation, includes a mercury-dispensing intermetallic compound A with Hg and a second metal selected among Ti, Zr and mixtures thereof, as well as a promoting alloy or intermetallic compound B including Cu and a second metal selected among Sn, In or Ag or combinations thereof. There is also disclosed a mercury-dispensing device containing a combination of materials A and B, in addition to a process for introducing mercury into electron tubes consisting in the introduction of one of said devices inside the open tube and then heating thereof at a temperature between 550.degree. and 900.degree. C. after the tube sealing in order to get Hg free.

Combination of materials for mercury-dispensing devices, method of

The process of the present invention provides for the sorption of unwanted gas in a vessel by means of a non-evaporated barium getter. It comprises the steps of reducing an alloy of Ba.sub.1-x A.sub.x Li.sub.4-y B.sub.y to a particle size of less than 5 mm, under vacuum or an inert gas atmosphere and then placing the reduced alloy in the vessel. Upon exposing the reduced alloy to the residual gas in the vessel at a temperature of less than 150.degree. C., the gas is sorbed. The metal A is a metal chosen from the group consisting of elements of Group IIa of the periodic table of elements, excluding barium. The metal B is chosen from the group consisting of elements of Group IIIa of the periodic table of elements. Preferably 0.ltoreq.x.ltoreq.0.5 and 0.ltoreq.y.ltoreq.3.5.

Process for the sorption of residual gas by means of a non-evaporated

A getter device comprising a U-shaped ring, a base disc, and an annular disc.

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Garbagnate, Italy

Antonio Schiabel